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正負數

Authored by 劉明承 劉明承

Mathematics

7th Grade

Used 8+ times

正負數
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10 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

下列何者正確?

-3-2=-1

2-(-5)=2+5

5+(-3)=5-(-3)

3-(-4)=3+(-4)

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

設A代表一個數,則(-A)表示

負數

正數

0

無法確定

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

 數線上表示-4、-1.25、2.7、 72\frac{7}{2}  四個點,和原點距離最近的點是

-4

-1.25

2.7

 72\frac{7}{2}  

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

合歡山上。在中午的溫度是攝氏4度,在夜晚溫度降低了9度,則此時山上的溫度是

-9

-13

-5

5

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

數線上一點A所表示的數為5,則與A相距12單位的點所表示的數為

7

-7

7或-17

-7或17

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

數線上三點A、B、C,若其表示的數分別為1、3、8,今以B為新原點,則C所代表的為

3

5

7

11

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

數線上在原點左邊,距離原點越遠的數會

越小

越大

不一定

必為正數

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